const http = require('http')
const server = http.createServer()

server.on('request', (req, res) => {
  //1.获取请求的url地址
  const url = req.url
  //2.设置默认内容为404 Not Found
  let content = '<h1>404 Not Found!</h1>'
  //3.判断用户请求
  if(url === '/' || url === './index.html') {
    content ='<h1>首页</h1>'
  } else if (url === './about.html') {
    content ='<h1>关于</h1>'
  } 
  res.setHeader('Content-Type', 'text/html; charset=utf-8')
  res.end(content)
})

server.listen(80, () => {
  console.log('server running at http://127.0.0.1')
  
})